“sb's been doing sth ”怎么理解 这个“'s”是is 还是was
“sb's been doing sth ”怎么理解 这个“'s”是is 还是was
到底是approve of sb's doing sth还是 approve of sb doing sth?
想像某人做某事是“imagine sb doing sth”还是“imagine sb‘s’ doing sth”?
let's sb to do sth还是doing sth
sb's job is to do sth 是对的还是sb's job is sth是对的?
mind one's doing sb sth.有这个用法吗?
fancy sb's doing sth与fancy sb diong sth要怎么区别?
require的用法是require sb doing sth,require sb do sth ,require s
sb was doing sth
take sb's turn to do sth 还是take sb's turn doing sth?为什么牛津字典里
watch sb do/doing sth;see sb do/doing sth;hear sb do/doing s
高中英语语法大师来啊1Bear sb sb's doing sth这个结构中的sb's doing sth是什么用法?2